A Wiki is like a web site, except that you can edit the content in your browser

• "Wiki" is short for "wiki wiki", the Hawaiian for "Quick"
• The idea originates from Macintosh Hypercard, via Ward Cunningham
• In Ward's words, Wiki is "the simplest online database that could possibly work"
• A Wiki is basically a shared, online, persistent whiteboard

• Anyone can add content
  ... or change what is written
  ... or change the organisation of the content
• Whatever what you write is
  ... nicely presented
  ... remembered... and never forgotten

• A "plugins" interface eases
  • customisation
  • extension
  • application integration

• You've read a page, and you disagree with it violently! It says:
  Everyone knows that the world is an OblateSpheroid
  But you know for a fact it is flat!
• You've clicked the edit link, and an edit page has appeared. But it doesn't look much like what was on the page before - it's full of strange hieroglyphics!

• Now what?

• The hieroglyphics are what's known as "TWiki Markup" or "formatting"
• They are a really simple way of telling the browser how you want the page to look
• You don't have to use them
  • TWiki understands pages in plain text just fine.
    
    Actually it is perfectly and absolutely flat
    
    appears as
    
    Actually it is perfectly and absolutely flat

... and easier to read

_Actually_ it is *perfectly* and __absolutely__ flat

appears as

Actually it is perfectly and absolutely flat

• A full description of all the formatting can be found in the TextFormattingRules and TextFormattingFAQ
• The best thing to do is just to type until you get stuck
  • then follow the link on the edit page to the help.

TWiki understands pages in plain text just fine, but you can jazz them up using some simple formatting shortcuts. Here are some of the more commonly used ones:

• ---+ indicates a heading. Add more +'s for a deeper heading.

  You type	You see
  ---+ This is a heading	This is a heading
  ---++ And so is this	And so is this

• %TOC% will insert a table of contents
  

• A blank line gives a paragraph break
  
• --- on a line of its own gives a horizontal bar
• Text in stars *like this* looks like this
  
• Text in underscores _like this_ looks like this
  
• Text in equals signs =like this= looks like this
  
• Bulleted lists use three spaces followed by an asterisk (*) at the start of the line
  • The depth of the bullet is given by the number of spaces, in multiples of three

• Numbered lists use a number in place of the *. The list is numbered automatically, so you can just use a 1

• You can create a table using vertical bars:

     | Cat | Feline |
     | Bear | Ursine |
     | Wolf | Vulpine |

• appears as

  Cat	Feline
  Bear	Ursine
  Wolf	Vulpine

• %RED% .... %ENDCOLOR% will change the colour of the enclosed text. Lots of colours are available (%RED%, %GREEN%, %BLUE% etc)

• One special hieroglyph that is very important is a BumpyWord
  • a word that starts with uppercase, then some lowercase, then more uppercase (a.k.a CamelCase)
• This has a special meaning to TWiki; if it matches the name of another topic, TWiki will automatically create a link to that page for you.
• If there is no such page, then the word is highlighted and a question mark is put after the word, LikeThis^?
• If you click on the question mark, then TWiki will invite you to create that page.

• This lets you enter the names of topics you think should exist, but don't yet
  • You, or someone else, can always come along later and click on the question mark!

• BumpyWords automatically link to the target page
  • You can make these links easier to read using square brackets:
    • [[BumpyWords][bumpy words]] appears as bumpy words
• An ordinary URL pasted into text will appear as a link - http://www.google.com
  • You can also prettify URLs using square brackets:
    • [[http://www.google.com/][Google]] appears as Google
• Use %SEARCH. This is an interface to a sophisticated search engine that embeds the results of the search in your page. See TWikiVariables for full details.

• There's lots more formatting available, see TextFormattingRules and TextFormattingFAQ
• If you are a real masochist, you can even enter raw HTML tags!
• Important to disable unwanted formatting, use <nop>
  • <nop>_word_ appears as _word_

• Alternative ways:
  • Click on the question mark after a BumpyWord
  • Type in the name of the topic in the "Go:" box
  • Type in the name of the topic in the URL
• Any time you try to visit a page that doesn't exist, TWiki will invite you to create it.
• Make sure the names of topics are always BumpyWords.

• Attachments are files which have been uploaded and attached to a TWiki page using the 'Attach' function in the footer.

Attachment	Action	Size	Date	Who	Comment
myco.gif	manage	9.6 K	13 Feb 2004 - 18:41	MushroomMagicMan	Attached image file

• Attachments are simply files, in whatever format you want.
• TWiki recognises some file formats, notably image files (.gif)
  • Write %ATTACHURL%/myco.gif to see this:

Enough about mechanics; how is a wiki actually used ? Well, that's really up to you, but there are a number of tricks that the wiki community has developed for collaborative writing that work pretty well:

• What can I edit?
  • Anything. But it's good etiquette to sign your contributions
  • If someone doesn't want you to edit a page, it's up to them to say so, clearly, on the page
• But what if somebody doesn't like my edits?
  • In TWiki, they can always recover the old revision and re-instantiate it if they really want to
  • Otherwise they should regard your changes as an opportunity for discussion
• Pages in wiki are (usually) in one of three "modes"
  • DocumentMode
  • ThreadMode
  • StructuredMode

• A page in DocumentMode usually comprises a contribution which is written in the third person and left unsigned.
• The piece of text is community property
  • It may have multiple and changing authors as it is updated to reflect the community consensus.

• Thread mode is a form of discussion where the community holds a conversation
• The discussion usually starts out with a statement, at the top of the page, that is subsequently discussed
• The page may be periodically "refactored" (edited) to remove some of the comments
  • As long as the comment is accurately reflected in what replaces it, nobody usually minds.
  • Remember to always maintain a complete list of contributors, though!

• ThreadMode is rather like an e-mail thread
  • Except that new comments are usually added to the end
• ThreadMode pages often get refactored into DocumentMode

• A page in StructuredMode follows some predefined structure for example
  • An agenda
  • A set of meeting minutes
  • A requirement description.
• Pages in StructuredMode will usually have rules governing how they are edited.

• A Wiki trick for grouping pages together
• Example: to group together a set of pages all relating to the weather:
  1. Create a page called 'CategoryWeather'
  2. Put a SEARCH that contains the word 'CategoryWeather' into it
     • %SEARCH{"CategoryWeather" nosearch="on" nosummary="on"}%
  3. Put the BumpyWord 'CategoryWeather' on all the pages relating to the weather
     (usually at the bottom, below a horizontal bar)

Basic TWiki is rich with features, but is enriched even further by the addition of optional plug-in modules that may (or may not!) be installed in your TWiki. These are classified as either skins (modules that change the look-and-feel) and plugins (modules that enhance functionality).

Here's a brief description of some of the more common plugins, together with the tags you might expect to see in topics if they are used. You can find out more by visiting the plugin pages.

• ActionTrackerPlugin: Support action tags in topics, with automatic notification of action statii %ACTION...
• CalendarPlugin: Show a monthly calendar with highlighted events %CALENDAR...%
• CommentPlugin: Support rapid entry of short comments (also known as blogging) %COMMENT...
• ChartPlugin: Create PNG or GIF charts to visualize data in TWiki tables %CHART...
• EditTablePlugin: Edit TWiki tables using edit fields and drop down boxes %EDITTABLE...
• InterwikiPlugin: Define shortcuts for links to common external sites

• RenderListPlugin: Render bullet lists in a variety of formats %RENDERLIST...
• SlideShowPlugin: Create web based presentations based on topics with headings %SLIDESHOWSTART...
• SpreadSheetPlugin: Add spreadsheet calculations like "$SUM( $ABOVE() )" to tables located in TWiki topics %CALC...
• TablePlugin: Control presentation and sorting of tables %TABLE...
• TWikiDrawPlugin: Add quick sketches to pages %DRAWING...

There are many other plugins, see http://TWiki.org/cgi-bin/view/Plugins

• This training was developed by TWiki:Main.CrawfordCurrie on behalf of Oxamer, one of the companies in the Oxford Gene Technology group.
• Valuable contributions were also received from the TWiki Open Source community; special mentions go to:
  • TWiki:Main.WalterMundt
  • TWiki:Main.SvenDowideit
• The latest version of this presentation is available at TWiki:TWiki.ATasteOfTWiki, where you can also provide feedback